Ricci disappeared Oct. 7, 2005, as he was on trial for waterfront racketeering. His remains were found in the trunk of a car parked at a New Jersey diner.

Investigators believe Fiumara (right), reputed lieutenant in the Genovese organization, had Ricci killed because Ricci refused to plead guilty in the case and allow his longshoremen union official codefendants to stand trial on their own.

According to the Daily News, federal agents are working to convince crime family lieutenant Michael "Mikey Cigars" Coppola, now awaiting trial for a 1977 murder, to cooperate in the investigation of Fiumara.

Fiumara is believed to be a major power within the Genovese organization. Authorities say he commands waterfront labor rackets in New Jersey. In 1979, he was convicted of labor racketeering and extortion. He was sentenced to 15 years in prison. In 2000, he was convicted of violating the terms of his parole by secretly meeting with other members of the Genovese Crime Family.

The Genovese family has reportedly been without an official boss since the death of Vincent "the Chin" Gigante three years ago.